The core module contains a number of SASS variables/mixins/functions, and a JavaScript class for the silc framework.

Converts a pixel value into its em equivalent. Accepts a second "context" parameter, which is the context value to base the calculation on. The context parameter defaults to the value of @silc-core--font-size, which by default is 16px.

em(16); // Returns 1em
em(16, 32); // Return 2em

Converts a pixel value into its rem equivalent. The context for rem calculations is the root (html) element font size, which defaults to the value of @silc-core--font-size.

rem(25); // Returns 1.5rem

Strips units from a passed in string.

strip-unit(16px); // Returns 16

Creates a media query based on a passed in breakpoint name, defined in $silc-core--breakpoints.

@include media('large') {
    font-size: rem(20);
}

A number of SASS variables are available to override. One particular variable to pay attention to is the $silc-core--breakpoints variable. The breakpoints variable allows you to create your own named breakpoints, which will then be used when using other silc modules like silc-grid.

The SilcCore class adds a js class to the body element, which can then be used to progressively enhance your styles.